Physics Current Electricity BUMHS 2022
PMDC Verified Question 66 of 112
The internal resistance of a battery is due to which of the following reasons?
A
Electrolytes
B
Ions moving charges
C
Moving charges
D
Static charges
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Electrolytes
Concept:

A battery provides electromotive force but also resists the internal flow of its own current.

Solution:

  • Inside a chemical battery, current is carried by ions moving through an electrolyte.


  • The electrolyte material inherently offers opposition to the movement of these ions. This opposition is defined as the battery's internal resistance.


Why other options are incorrect:

  • Opt B & C: Moving charges define the current itself, not the resistance acting upon them.


  • Opt D: Static charges do not flow, so they do not participate in internal dynamic resistance.

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